Display screen or portion thereof with graphical user interface



FIG. 1A is a front view of a left portion of a display screen or portion thereof with a graphical user interface, showing our new design; and,

FIG. 1B is a front view of a right portion of a display screen or portion thereof with a graphical user interface, showing our new design.

The outermost broken line rectangle illustrates a display screen or portion thereof. All of the text shown is illustrated with broken lines. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 